【正文】 A． It couldn39。s all right B． No problem ? C． I can39。鄭州 47中 )I hear many people are on the beach after the rainstorm， for there ________ thousands of kinds of seashells. ? A． have B． are ? C． having D． being ? 答案： B ? 3． (2020浙江 ) ? Plants can39。re say the enose could help quickly detect whether plants are being eaten by today the only way to detect such insects is to visually inspect individual is a challenging task for managers of greenhouses， enclosed gardens that can house thousands of plants. ? The reasearch team worked with an enose that recognizes volatile the device,13 sensors chemically react with volatile on these interactions，the enose gives off electronic signals that the scientists analyze using puter software. ? To test the nose， the team presented it with healthy leaves from cucumber，pepper and tomato plants， all mon greenhouse the scientists collected samples of air around damaged leaves from each type of plants had been damaged by insects， or by scientists who made holes in the leaves with a hole punch(打孔器 )． ? The enose， it turns out， could identify healthy cucumber， pepper and tomato plants based on the volatile pounds they could also identify tomato leaves that had been even more impressive， the device could tell which type of damage—by insects or with a hole punch—had been done to the tomato leaves. ? With some fiuning， a device like the enose could one day be used in greenhouses to quickly spot harmful bugs， the researchers device like this could also be used to identify fruits that are perfectly ripe and ready to pick and eat， says Natalia Dudareva， a biochemist at Purdue University in West Lafayette， studies smells of flowers and ， scientists believe， the device could bring large benefits to greenhouse managers in the near future. ? 1． We learn from the text that plants municate with each other by ________. ? A． making some sounds ? B． waving their leaves ? C． producing some chemicals ? D． sending out electronic signals ? 答案與解析： C 細節(jié)理解題。 ? 3． According to the writer， the most amazing thing about the enose is that it can ________. ? A． pick out ripe fruits ? B． spot the insects quickly ? C． distinguish different damages to the leaves ? D． recognize unhealthy tomato leaves ? 答案與解析： C 細節(jié)理解題。 。 ? 4． We can infer from the last paragraph that the enose ________. ? A． is unable to tell the smell of flowers ? B． is not yet used in greenhouses ? C． is designed by scientists at Purdue ? D． is helpful in killing harmful insects ? 答案與解析： B 推理判斷題。 ? 2． What did the scientists do to find out if the enose worked? ? A． They presented it with all mon crops. ? B． They fixed 13 sensors inside the device. ? C． They collected different damaged leaves. ? D． They made tests on damaged and healthy leaves. ? 答案與解析： D 細節(jié)理解題。s sweet smell， for example， es from volatile pounds that the plant produces to attract insects such as bugs and bees. ? Plants can also detect volatile pounds produced by other tree under attack by hungry insects， for instance， may give off volatile pounds that let other trees know about the response， the other trees may send off chemicals to keep the bugs away—or even chemicals that attract the bugs39。安徽兩地三校聯(lián)考 )________ thousands of people outside； it was too noisy. ? A． There seemed to be ? B． There seemed to have ? C． It seemed to be ? D． It seemed to have ? 答案： A ? 5． (2020s impossible ? 答案： C ? 1． (2020膠州診斷